Numerical Optimization of Hydraulic Fracture Stage Placement in a Gas Shale Reservoir

The upstream oil and gas industry focuses increasingly on unconventional gas resources to maintain the level of its hydrocarbon reserves. To unlock the full potential of gas shale reservoirs, horizontal wells are drilled and active stimulation of the reservoirs, in the form of multi-stage hydraulic fracturing, is performed. This new technique...

Maximum allowable pressures during horizontal directional drillings focused on sand

Horizontal directional drilling (HOD) is a rather simple installation technique for pipes for public infrastructure and it has therefore become increasingly popular. When HOD is started, a pilot drilling is made first; a small borehole is made in the soil along the trajectory. After the pilot drilling the borehole is enlarged with a reamer until...